Liquid silicone rubber (LSR) has gained considerable importance in various branches of industry due to its unique properties such as high heat resistance, chemical resistance and excellent aging properties. LSR is used in a wide range of applications, from seals to medical devices and food components. The LSR injection molding process enables precise processing with short cycle times, but there is currently no recycling concept for LSR. This study investigates the processing properties of virgin LSR with added mechanically recycled LSR material in the injection molding process. Rheological tests of LSR compounds with varying particle sizes of the recycled material show significant effects on viscosity and processing parameters during injection molding. Nevertheless, processability in the injection molding process is possible. The viscosity of the material increases with a higher proportion of recycling amount, particularly with finer particles, but the surface quality remains very high with these small particles. With larger particles, significant surface defects are noticeable. These results show the potential of LSR recycling for economic and ecological benefits in new products, but at the same time emphasize the need for precise process control and control of the material composition.